#P1.4.1
construct and interpret two-dimensional ray diagrams to illustrate specular reflection by mirrors
qualitative only
#P1.4.2
construct and interpret two-dimensional ray diagrams to illustrate refraction at a plane surface and dispersion by a prism
qualitative only
#P1.4.3
use ray diagrams to illustrate the similarities and differences between convex and concave lenses
qualitative only
#P1.4.4
describe the effects of transmission, and absorption of waves at material interfaces
#P1.4.5
explain how colour is related to differential absorption, transmission, and scattering
#P1.4.6
describe, with examples, processes in which sound waves are transmitted though solids
#P1.4.7
explain that transmission of sound through the bones in the ear works over a limited frequency range, and the relevance of this to human hearing
#P1.4.8
explain, in qualitative terms, how the differences in velocity, absorption and reflection between different types of waves in solids and liquids can be used both for detection and for exploration of structures which are hidden from direct observation, notably:
a) in our bodies (ultrasound imaging)
b) in the Earth (earthquake waves)
c) in deep water (SONAR)
#P1.4.9
show how changes, in speed, frequency and wavelength, in transmission of sound waves from one medium to another, are inter-related